on 2017-Apr-15 16:12:34 did you really have a laser safety class? said

Front end of a buggy != driver's eyes. Driver's eyes are higher and more often than not, have a chunk of buggy between them and the light path (which is perpendicular to the line of travel). If a driver is facing in that direction, they have bigger issues. A driver might be able to get their right eye low enough by turning their head in that direction but again, this creates bigger issues than the laser-eye interaction.

Windshields are curved, so there's the possibility of refraction or reflection off the inside of the windshield getting light to places not directly in line with the beam. At typical buggy speeds, the windshield is exposed for at most 0.025 seconds, and any bounce is going to be much weaker than the source, so distraction seems a bigger hazard than eye injury.

Using a UV or IR laser at a frequency that Lexan is opaque to would eliminate both problems, but then aiming would be a bit harder.